.mutate(BuildTypeContainer) { it.add named(BuildType, "bt") }
            .mutate(FlavorContainer) { it.add named(Flavor, "flavor1") }

        then:
        single(toolChains).name == 'tc'
        platforms.size() == 1
        single(buildTypes).name == 'bt'
        single(flavors).name == 'flavor1'
    }

    def "creates binaries for executable"() {

// tag::cacheKapt[]
plugins.withId("kotlin-kapt") {
    kapt.useBuildCache = true
}
// end::cacheKapt[]

// tag::fabricGroovy[]
plugins.withId("com.android.application") { // or "com.android.library"
    android.buildTypes.debug.ext.enableCrashlytics = false
}

        minSdkVersion(15)
        targetSdkVersion(27)
        versionCode = 1
        versionName = "1.0"
        testInstrumentationRunner = "android.support.test.runner.AndroidJUnitRunner"
    }
    buildTypes {
        named("release") {
            isMinifyEnabled = false
            proguardFiles(getDefaultProguardFile("proguard-android.txt"), "proguard-rules.pro")
        }
    }
// tag::android[]
}

        val stagePasses = StagePasses(model, stage, prevStage, stageProject)
        buildType(stagePasses)
        subProject(stageProject)

        prevStage = stage
        previousPerformanceTestPasses.addAll(stageProject.performanceTests)
    }

    buildType(GitHubMergeQueueCheckPass(model))

    buildTypesOrder = buildTypes
    subProjectsOrder = subProjects

    cleanupRule(
        historyDays = 14,

For example, both `configurations` and `tasks` are container objects that contain `Configuration` and `Task` objects respectively.
Community plugins also contribute containers, like the `android.buildTypes` container contributed by the Android Plugin.

The Kotlin DSL provides several ways for build authors to interact with containers.
We look at each of those ways next, using the `tasks` container as an example.

    buildType.killProcessStep(KILL_LEAKED_PROCESSES_FROM_PREVIOUS_BUILDS, os)
    buildType.gradleRunnerStep(model, gradleTasks, os, arch, extraParameters, daemon)

    buildType.steps {
        extraSteps()
        killProcessStep(buildType, KILL_PROCESSES_STARTED_BY_GRADLE, os, arch, executionMode = ExecutionMode.ALWAYS)
        checkCleanM2AndAndroidUserHome(os, buildType)
    }

object UtilProject : Project({
    id("Util")
    name = "Util"

    buildType(RerunFlakyTest(Os.LINUX))
    buildType(RerunFlakyTest(Os.WINDOWS))
    buildType(RerunFlakyTest(Os.MACOS, Arch.AMD64))
    buildType(RerunFlakyTest(Os.MACOS, Arch.AARCH64))
    buildType(WarmupEc2Agent)

    buildType(PublishKotlinDslPlugin)

    params {
        param("env.DEVELOCITY_ACCESS_KEY", "%ge.gradle.org.access.key%")

            def buildType = Attribute.of('buildType', String)
            def flavor = Attribute.of('flavor', String)
            dependencies {
                attributesSchema {
                    attribute(buildType)
                    attribute(flavor)
                }
            }

            configurations {
                foo.attributes { attribute(buildType, 'debug'); attribute(flavor, 'free') }

            }
        }
    }

    private static class Attributes implements BuildScanConfig.Attributes {
        private final BuildType buildType;

        public Attributes(BuildType buildType) {
            this.buildType = buildType;
        }

        @Override
        public boolean isRootProjectHasVcsMappings() {
            return false;
        }

        @Override

        failure.assertHasCause("""No matching variant of project :b was found. The consumer was configured to find attribute 'buildType' with value 'debug', attribute 'flavor' with value 'free' but:
  - Variant 'bar':
      - Incompatible because this component declares attribute 'buildType' with value 'release' and the consumer needed attribute 'buildType' with value 'debug'
      - Other compatible attribute: